You can dump a full 5 quart jug in there instead of the quoted 4.-something according to the manual. Several of us have been doing it for years, as well as some dealers.
The dipstick will read high, you'll see the oil up to where the bend is.
This is perfectly fine but of course I would watch the level before dumping a 5 quart jug in there just so you don't end up severly overfilled for whatever reason.